Question

1) The first version of Windows O.S. was introducedin__________. 2) _________ is a collection of free text and other books on Internet. 3) __________ tool is used for plotting charts in MS-Excel.4) VOIP stands for __________.5)__________ symbol is used to hold a column or row constant.​

Answer 1

Explanation:

1.1985

2.e-books

4.Voice over Internet Protocol

5.Dollar signs

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